Note 5 - Inventory - Summary of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Raw materials and supplies	$ 180	$ 185
Finished goods	652	554
Less: Reserve for excess and obsolete inventory	(206)	(247)
Total inventory, net	$ 626	$ 492

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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